Feeder for roller-mills.



, P a e n t e d A p r l l 9 D 2. H. GSCHWEN D E R & J H D E A R H 0 L T. FEEDER FOR ROLLER MILLS.

(N D MUUQL) Y 2 Sheets-Shelet l.

IIIII IIIIIIIIII J I MIIII o (r 'Z6 i!! mi' Il I N0. 696,673. Patented Apr. I, |902.

H. GSCHWENDER & J. H. DEARHLT.

FEEDER FOB ROLLER MILLS.

(Applaton led Dec. 18, 1900A 2 Sheets-Sheet 2.

(No Model.)

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HENRY GSOHWENDER AND JOHN HENRlT DEARHOLT, OF ONTARIO VISCONSIN.

FEEDER FOR ROLLER-MILLS.

SPECIFICATION forming part of Letters Patent No. 696,673, dated April 1, 1902. Application filed December 18, 1900I Serial No. 40,300. (No model) To @ZZ whom/ t may concern:

Be it known that we, HENRY GSCHWENDER and JOHN HENRY DEARHOLT, citizens of the United States, residing at Ontario, -in the county of Vernon and State of Wisconsin, have invented a new and useful Feeder for Roller-Mills, of which the followingis a specification.

Our invention is an improved feeder for roller-mills to grind wheat and the like; and it consists in the peculiar construction and combination of devices hereinafter set forth, and pointed out in the claims.

One object of our invention is to effectimprovements in the construction of the feed mechanism for feeding the grain evenly to the shoe.

A further object of our invention is to effect improvements in the means for vibrating the shoe.

A further object of our invention is to effect improvements in the means for communicating power from one of the grinding-rolls to the shaft which actuates the shoe.

A further object of our invention is to effectimprovements in the mechanism for starting and stopping the operation of the shoe and for simultaneously adjusting the outer grinding-roll.

In the accompanying drawings, Figure 1 is a perspective view of a roller-mill provided with a feeder constructed in accordance with our invention. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a vertical transverse sectional view taken on a plane indicated by the line a d of Fig. 2. Fig. 4. is a horizontal sectional view taken on a plane indicated by the line b b ot' Fig. 2.

The housing 1 is of the usual or any suitable construction and is provided at its upper side with the feed-hopper 2, divided vertically into two compartments, in the lower end of each of which is disposed a pivoted valve 3, which may be turned and caused to direct the grain to either side of the shoe 4. The portions of the feed-hopper in which the valves are placed are contracted, as shown.

In the sides of the housing 1 are journaled the pairs of grinding-rolls 6. Y The means for drivingr the said grinding-rolls is that usually employed and well understood by those 'portion thereof.

skilled in this class of machinery, and said means is not here shown, as the same constitutes no part of our present improvements.

The shoe 4L is suspended in the upper portion of the housing by rods 7 and is adapted to be vibrated longitudinally. The said shoe is provided on its upper side with a vertical transversely-disposed partition-board 8.. The bottom of the shoe inclines downward and outward to each end from the said partitionboard, as at 9, and on the inclined bottom portions of the shoe, near the center of the latter, are feed-boards 10. At the outer end of each feed-board is a feed-gate 11, having a centrally-disposedpivotalsupportlP. Each feed-gate 1l carries a pair of auxiliary feedgates, each of which is pivot-ally connected at its center to one end of the gate 11, as at 12a. By means of said feed-gates 11 the gates 12 may be adjusted as may be required to cause the grain to flow evenly over said gates 12 to the grinding-rolls. gate 1l is lowered, one of the gates 12 will be lowered and the other raised simultaneously,

and hence all of the gates are adjusted by a single movement of the gate 11. Said gates 12, being pivoted at 12, may be adjusted to either a horizontal or a slightly-inclined position, as may be required. This adjustability ofthe gates 11 and 12 is illustrated by the dotted lines in Fig. 3. On the lower side vof the shoe 4t is a depending bracket-arm 13.

The said bracket-arm bears against one side of a spring-bar 1l. The said spring-bar is disposed transversely in the housing, and the said bracket-arm bears against the central A pair of tappet-arms 15 are also secured and depend vertically from the lower side ofthe shoe. The said tappetarms are engaged by cams 16, which are carried by a shaft 17, which has its bearings in 'the sides of the housing and is vertically movable to a slight extent in its bearings. The said shaft 17 is provided with frictionwheels 18, which bear upon the upper side of one of the rolls 5 and by frictional contact therewith communicate motion from the said roll to the said shaft 17 when the mill is in operation.

A shaft 19 is journaled in bearings in the sides of the housing, extends transversely When one end of 1 shoe.

ing-roll 5 when the mill is in operation.

through the same, and is disposed at a suitable distance from the shaft 17. shaft 19 is provided at each end, which projects beyond one side of the housing, with a pair of eccentries 2O 21, which are disposed at a suitable angle with relation to each other. The eccentrics 20 operate in suitable eccentric-straps on the inner ends of tension-levers 22. Said levers are provided with bearings,as at 23, for the ends of the shaft 17, and the outer ends of said tension-levers are supported byadjusting bolt-rods 24, which are secured in lugs or ears 25, that yproject from the outer sides of the housing. Tension-springs 26 on the said bolt-rods bear downward on the outer ends of the tension-levers and keep the friotion-rollers 18 in engagement with the grind- By adjusting the bolt-rods 24 the tension of the springs 26 may be varied as may be required.

At one end of the shaft 19 is ahand-lever27,

by means of which the said shaft maybe partly rotated to operate the eceentrics 20 21.

vIt will be understood that the eccentrics 20, in

coaction with the tension-levers 22,serve to raise and lower the shaft 19, so as to engage the friction-wheels 18 With the grinding-M115 in order to actuate the shoe and to disengage said friction-wheels from said grindingroll in order to stop the operation of the said The revoluble cams 16 and coacting tappets 15 and springs 14 serve to vibrate the shoe, as will be understood. The said cams 16 may have as many faces as may be required in order to vibrate the shoe as rapidly as may be necessary.

The grinding-roll G, being the outer roll of the pair, has its shaft journaled in bearings '28 in adjusting-arms 29, the latter being pivotallysupported at their lower ends, as at 80,

on the sides of the housing. The said outer grinding-roll 6 is movable laterally toward and from the counter-roll 5, and the upper vends of said adjusting-arms 29, which carry said movable roll 6, are connected to the eccentric 21 on shaft 19 by rods 31. From the foregoing it will be understood that when The said the shaft 19 is turned, by means of the lever 27, so as to engage the friction-wheels 18 with the roll 6 the said roll 6 is by the adjusting-arms 29 and rods 31 moved toward the counter-roll 5 and that when the shaft 19 is turned so as to disengage the friction-wheels 18 from the roll 5, and thereby stop the rotation of the shaft 17 and the operation of the shoe, the said roll 6 is by the said adjusting-arms 29 and rods 31 moved outward from the counter-roll 5.

Havingthus described our invention, We claim- 1. The combination, in a roller-mill, of a vibrating shoe, a vertically-movable poWershaft, connections between the latter and said shoe to vibrate said shoe, a grinding-roll, friction-wheels on said power-shaft to engage said grinding-roll, tension arms or levers having bearings for said vertically movable power-shaft, a shaft having eccentrics connected to and supporting, said tension-levers, at one end thereof, and springs to depress said tension-levers, for the purpose set forth, substantially as described.

2. The combination, in a roller-mill, of a vibrating shoe, a vertically-movable powershaft, connections between the latter and said shoe to vibrate said shoe, a grinding-roll, friction-wheels on said power-shaft to engage said grinding-roll,tension-levers having bearings for said vertically-movable power-shaft, a movable grinding-roll, adjusting-arms having bearings thereforand a shaft in iiXed bearings having eccentrics connected to said tension-levers and said adjusting-arms whereby said vertically-movable power-shaft and said movable grinding-roll are adjusted simultaneously, substantially as described.

In testimony that we claim the foregoing as our own we have hereto aflixed our signatures in the presence of two Witnesses.

HENRY GSCHWENDER. J. H. DEARHOLT. YVitnesses:

ALLEN WELCHER, ERNEST WELCHER. 

